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MBBS Anatomy — practice by topic

Browse 23 questions across 3 Anatomy topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Anatomy topics

The Cardiovascular System: The Heart (10)The Digestive System (8)Muscle Tissue (5)

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Which connective tissue layer wraps an entire skeletal muscle, separating it from other tissues and organs nearby?Read the answer and worked solution →Within a skeletal muscle, individual muscle fibers are grouped into bundles called fascicles by which middle connective tissue layer?Read the answer and worked solution →The broad, tendon-like sheet into which the latissimus dorsi muscles fuse in the lower back is an example of which structure?Read the answer and worked solution →What is the plasma membrane of a skeletal muscle fiber specifically called?Read the answer and worked solution →

Worked practice questions

Which connective tissue layer wraps an entire skeletal muscle, separating it from other tissues and organs nearby?

  1. Epimysium
  2. Perimysium
  3. Endomysium
  4. Aponeurosis
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Correct answer: A. Epimysium

1. Skeletal muscle has three layers of connective tissue collectively called the mysia. 2. The outermost of these, wrapping the whole muscle as a sheath of dense irregular connective tissue, is the epimysium. 3. The epimysium lets the muscle contract independently of surrounding structures. 4. Perimysium wraps fascicles and endomysium wraps single fibers, so both sit deeper than the whole-muscle wrapping described here. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 10 "Muscle Tissue", section 10.2, p. 407_

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Within a skeletal muscle, individual muscle fibers are grouped into bundles called fascicles by which middle connective tissue layer?

  1. Epimysium
  2. Perimysium
  3. Sarcolemma
  4. Endomysium
Show answer and solution

Correct answer: B. Perimysium

1. Inside the epimysium, skeletal muscle fibers are not loose but organized into bundles. 2. Each such bundle is called a fascicle. 3. The middle mysia layer that organizes fibers into fascicles is the perimysium. 4. Epimysium wraps the whole muscle and endomysium wraps single fibers, and sarcolemma is a fiber's own membrane, so none of these organize fibers into fascicles. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 10 "Muscle Tissue", section 10.2, p. 407_

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The broad, tendon-like sheet into which the latissimus dorsi muscles fuse in the lower back is an example of which structure?

  1. A triad
  2. An epimysium alone
  3. An aponeurosis
  4. A sarcomere
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Correct answer: C. An aponeurosis

1. In some places, the mysia connective tissue layers fuse with a broad, tendon-like sheet rather than a rope-like tendon. 2. This broad sheet is called an aponeurosis. 3. The example given is the sheet in the lower back into which the latissimus dorsi (the "lats") fuse. 4. A triad and a sarcomere are microscopic contractile structures, and the epimysium alone is just the outer muscle wrapping, none of which are the broad tendon-like sheet described. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 10 "Muscle Tissue", section 10.2, p. 408_

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